NEW YORK (CNN/Money) - Computer memory chip maker Micron Technology Tuesday logged a wide fiscal fourth-quarter loss as weakening prices took a big bite out of its bottom line.

After the close of trading, the Boise, Idaho-based company said it lost $586.5 million, or 97 cents per share, during the period that ended Aug. 29. That compares with a loss of $575.5 million, or 96 cents per share, a year earlier.

The company's fourth-quarter net loss includes a $174 million inventory charge to reflect a decline in the price of its DRAM chips. It also includes a tax-related charge of $348 million.

At the same time, Micron's fourth-quarter revenue rose 55.7 percent on a year-over-year basis to $748 million from $480.3 million, but fell from $771.2 million in the third quarter.

At the same time, average selling prices for Micron's semiconductor products decreased approximately 30 percent in the fourth quarter compared with the immediately preceding quarter ended May 30, the company said.

The company said the revenue decline was offset to some extent due to a higher unit shipments of more expensive memory chips.

Shares of Micron (MU: Research, Estimates) fell to $12.27 in extended-hours trade Tuesday after rising 1.5 percent to $12.95 on the New York Stock Exchange.

Micron's stock, as well as the stocks of several other PC-related chipmakers, have touched multiyear lows recently amid mounting evidence that PC sales during the holiday season are likely to be lower than previously thought.